摘要
基于河道健康生态系统和水量平衡的角度,分析城区河道生态环境需水的计算方法,并以东阳市主城区内河道水系为例,计算河道生态环境需水量.在满足此生态环境需水量的工况下,进一步评价河道内生态环境状况.结果表明:东阳市主城区河道生态环境需水量主要来自于河道维持健康生态系统所需的河道底质持水需水量和保证河道水体自净需水量;基于水量平衡的河道水面蒸发、地下渗透及水生植物蒸腾三部分需水量占比较小,其需水量与区域内水文地质条件及气候条件关系密切;东阳主城区内河道生态环境需水量1239万m^(3)/a,在满足此生态环境需水量量工况下,非汛期河道内生态环境状况为“优秀”;汛期河道内生态环境状况为“良好”.
Based on the view of river healthy ecosystem and water balance,the calculation method of ecological and environmental water demand of urban river was analyzed,and the ecological and environmental water demand of river was calculated by taking the river system in the main urban area of Dongyang city as an example,under the condition of eco-environmental water requirement,the eco-environmental condition in the river was further evaluated.The results showed:the eco-environmental water requirement of river course mainly comes from the water requirement of maintaining healthy ecosystem and ensuring the self-purification water requirement of river course;based on water balance,the water demand of surface evaporation,underground infiltration and transpiration of aquatic plants is relatively small,which is closely related to the hydrogeological and climatic conditions in the region;the eco-environmental water demand in the main urban area of Dongyang city is 12.39 million m 3/a,and the eco-environmental condition in the non-flood season is“Excellent”,and the eco-environmental condition in the flood season is“Good”.
作者
徐海飞
赵微人
纪芸
XU Haifei;ZHAO Weiren;JI Yun(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China;Dongyang Water Bureau,Dongyang 322100,China;China Water Resources Pearl River Planning Surveying&Designing Co.,Ltd,Guangzhou 510610,China)
出处
《湘潭大学学报（自然科学版）》
CAS
2022年第6期99-105,共7页
Journal of Xiangtan University(Natural Science Edition)
基金
水利部水利先进实用技术示范项目(SF-PX-201821)。
关键词
城区河道
健康生态系统
水量平衡
生态环境
需水量
urban river
healthy river ecosystem
water balance
ecological and environmental
water demand
